private void btn_Them_Click(object sender, EventArgs e) { if (txt_madm.Text == "" || txt_tendm.Text == "") { MessageBox.Show("không được để trống"); return; } DANHMUCSP bb = new DANHMUCSP(); var kt = from s in db.DANHMUCSPs where s.MADMSP == txt_madm.Text.ToString() select s; if (kt.Count() > 0) { MessageBox.Show("Trùng khóa chính"); return; } bb.MADMSP = txt_madm.Text; bb.TENDMSP = txt_tendm.Text; db.DANHMUCSPs.InsertOnSubmit(bb); db.SubmitChanges(); frm_dmsp_Load(sender, e); MessageBox.Show("Thành công"); txt_madm.Text = txt_tendm.Text = ""; }
partial void UpdateDANHMUCSP(DANHMUCSP instance);
partial void DeleteDANHMUCSP(DANHMUCSP instance);
partial void InsertDANHMUCSP(DANHMUCSP instance);